Ultra-fast intensified frame images from an electron cyclotron resonance hydrogen plasma at 2.45 GHz: Some space distributions of visible and monochromatic emissions
Cortázar, O. D., Megía-Macías, A., Vizcaíno-de-Julián, A., Tarvainen, O., Komppula, J., & Koivisto, H. (2014). Ultra-fast intensified frame images from an electron cyclotron resonance hydrogen plasma at 2.45 GHz: Some space distributions of visible and monochromatic emissions. Review of Scientific Instruments, 85 (2), 02A902. doi:10.1063/1.4824812
Published inReview of Scientific Instruments
© 2013 AIP Publishing LLC. Published in this repository with the kind permission of the publisher.
First results from an ultra-fast frame image acquisition diagnostic coupled to a 2.45 GHz microwave hydrogen discharge are presented. The plasma reactor has been modified to include a transparent doubled shielded quartz window allowing to viewing the full plasma volume. Pictures describing the breakdown process at 1μs exposure time have been obtained for integrated visible light signal, Balmer-alpha, Balmer-beta lines, and Fulcher-band. Several different plasma emission distributions are reported. The distribution depends on the magnetic field configuration, incident microwave power, and neutral gas pressure.